20485857

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51343}}^1$

素因数の和:51372

約数の個数: 16

約数和(自身を含む): 32860160

約数和(自身を除く): 12374303

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51343, 154029, 359401, 975517, 1078203, 2926551, 6828619, 20485857]

約数ペア:

[(1, 20485857), (3, 6828619), (7, 2926551), (19, 1078203), (21, 975517), (57, 359401), (133, 154029), (399, 51343)]